I really, really want to like these guys - I have been following Forth, Charles Moore, and colorforth since first reading up on Forth in 1996 or so.

However, the site is a dog's breakfast, and despite clicking around I cannot seem to locate an actual binary to download and run colorforth on Windows. Where / when can I buy an eval board? How do I connect it to ethernet, or USB?

Further, it seems to be a company where you have a lot of smart guys who are retired, and they are just putzing around without a burning desire to really take over the market they are targeting.

BTW it seems each core only has a very limited amount of RAM on it, 64 "words" which means 32 bits on PCs and 18 bits (???) on the g18 core CPUs.

I think that colorForth is the simulator.

I just downloaded it from: http://greenarraychips.com/home/documents/greg/code/af-34k2-...

It's only two clicks from the main page.

I don't know if I'll do anything with this or not.

Sorry about the title, I couldn't fit in who Moore is and have it make sense. I wanted to say: "Chuck Moore, the inventor of Forth, announced GreenArrays new CPU: 144 cores, capable of 100 billion ops/sec"

Forth inventor Chuck Moore announces 144 core CPU capable of 100 billion ops/sec

80 chars on the nose.

Very naïf question from a software-only guy: given that such a chip exists, how is one supposed to USE this kind of thing? Like, maybe plugging some kind of card on a PC? Or is it just interesting for hardware manifacturers?

Given the chip, you can't get to the "software only" part until you have:

- The chip mounted on a board with at least memory and communication.

- Software on your machine to talk to the board and hear back from it.

In general, the most rudimentary development kit possible is to have the chip on a board with a ROM socket, and some development setup that allows you to burn code to a ROM. Then you plug the ROM in the board, turn the power on, and see if it works ...

Anyone ever worked with one of his cpus?

The only commercial company that I know of, but I don't know much, who has explored using one of his CPUs is BMW.

.

If you want to try it out you can use their emulator: http://greenarraychips.com/home/documents/greg/cf-intro.htm softsim is an instruction level simulator for GreenArrays chips, using code you compile for ROM and/or RAM, and with provision for adding testbeds to simulate I/O.extend softsim to allow you to define and simulate external peripherals to interact with using I/O pins.

Wow. As an undergrad (equivalent - I live in Brazil), the best project I did (the one I am most proud of) was a stack-based CPU that ran something very close to Forth.

This is really, really cool.

100 billion instructions per second is what.. fast than the current Intel i7s? Am I reading this right?

I think it's about 10% as fast as a high end GPU, and around 2x faster than a CPU.

Edit: That's flops not instructions, it could be faster than that if it's doing multiple flops per instruction. Also GPU's have significant limitations so it's not really possible to get those speeds on a generic workload.

If those are the numbers, it seems to me that -while certainly an interesting concept- it has no future in practice, unless it is extremely cheap.

Where did you get that information? This hardware cannot do 1 flop in 1 instruction. Far from it, actually.

Never mind. I was thinking of a diffrent chip then.